Welding machine



FIG. 1 is a bottom view of the design;

FIG. 2 is a first side view of the design;

FIG. 3 is a back view of the design;

FIG. 4 is a second side view of the design;

FIG. 5 is a front view of the design;

FIG. 6 is a top view of the design;

FIG. 7 is a first perspective view of the design;

FIG. 8 is a second perspective view of the design;

FIG. 9 is a third perspective view of the design; and,

FIG. 10 is a fourth perspective view of the design.

The broken lines depict portions of the welding machine and form no partof the claimed design.

CLAIM The ornamental design for a welding machine, as shown anddescribed.